// src/books/dto/book.dto.ts
export class Book {
  id: string;
  title: string;
  author: string;
  publishYear: number;
  isbn: string;
  createTime: string;
  updateTime: string;
}

export class BookCreateDto {
  title: string;
  author: string;
  publishYear: number;
  isbn: string;
}

export class BookUpdateDto {
  title?: string;
  author?: string;
  publishYear?: number;
  isbn?: string;
}